A benign (non-cancerous) brain tumour is a mass of cells that grows relatively slowly in the brain.
Non-cancerous brain tumours tend to stay in one place and don't spread. It won't usually come back if all of the tumour can be safely removed during surgery.
If the tumour can't be completely removed, there's a risk it could grow back. In this case it'll be closely monitored using scans or treated with radiotherapy.
Read more about malignant (cancerous) brain tumours.
There are many different types of non-cancerous brain tumours, which are related to the type of brain cells affected.
The Cancer Research UK website has more information about the different types of brain tumours.
Brain tumours are graded from one to four according to how fast they grow and spread, and how likely they are to grow back after treatment.
Non-cancerous brain tumours are grades one or two because they tend to be slow growing and unlikely to spread.
They aren't cancerous and can often be successfully treated, but they're still serious and can be life threatening.
The symptoms of a non-cancerous brain tumour depend on how big it is and where it is in the brain. Some slow-growing tumours may not cause any symptoms at first.
Common symptoms include:
See your GP if you have symptoms of a brain tumour. While it's unlikely to be a tumour, these symptoms need to be assessed by a doctor.
Your GP will examine you and ask about your symptoms. They may also test your nervous system.
If your GP thinks you may have a brain tumour or they're not sure what's causing your symptoms, they'll refer you to a brain and nerve specialist called a neurologist.
The cause of most non-cancerous brain tumours is unknown, but you're more likely to develop one if:
Current evidence suggests mobile phones don't cause health problems such as brain tumours.
Read about mobile phone safety.
Treatment for a non-cancerous brain tumour depends on the type and location of the tumour.
Surgery is used to remove most non-cancerous brain tumours, and they don't usually come back after being removed. But sometimes tumours do grow back or become cancerous.
If all of the tumour can't be removed, other treatments, such as radiotherapy and chemotherapy, may be needed to control the growth of the remaining abnormal cells.
After treatment, you may have persistent problems, such as seizures and difficulties with speech and walking. You may need supportive treatment to help you recover from, or adapt to, these problems.
Many people are eventually able to resume their normal activities, including work and sport, but it can take time.
You may find it useful to speak to a counsellor if you want to talk about the emotional aspects of your diagnosis and treatment.